JPH0376393A - Character generation display system and call disconnection signal system - Google Patents

Abstract

PURPOSE:To reduce the consumption quantity of a DC current and to improve serviceability by displaying character information in a message display unit independent from a receiver displaying still picture information. CONSTITUTION:When a character generation circuit 9 receives a character code group Cc arriving from a control signal line 8, the circuit 9 analyzes the character code group Cc which a processor PU 92 receives, stores character codes A and B in the necessary address of a video memory VM 93, converts them into character information C and transmits them to the message display unit MD 61. The message display unit 61 displays character information C transmitted from a display control circuit 94 totally independent of still picture information Ps which a receiver TV 5 displays.

Description

[Detailed Description of the Invention] [Summary] Regarding the improvement of a character generation display method and a call disconnection signal method in an image response system, the present invention enables text information to be economically superimposed on image information regardless of the number of in-home devices installed; The object of claim 1 is to enable the display of small characters by preventing flickering of character information or color blurring, and also to enable the display of character information without damaging the displayed image information. Claim 2), and claim 3) aims to reduce the current consumption of the image center by in-home equipment as much as possible.
, the image center and a plurality of home devices are connected through video signal lines and control signal lines, respectively, and based on specified information transmitted from each home device to the image center via the control signal lines, In an image response system that retrieves image information from an image file and delivers it to a home device via a video signal line, a group of character codes indicating character information to be output to the home device is sent to the image center via a control signal line. A character code transmission means was installed to transmit the character codes to the home devices via the image center, and each home device received a group of character codes transmitted from the image center through the control signal line, and converted them into character information corresponding to the three primary colors. 1) further comprising character generating means for superimposing image information corresponding to the three primary colors and inputting it to the image output system, and further providing the image center with a character code group indicating character information to be output to the home device; A character code transmitting means is provided to transmit the character code to the in-home device via the control signal line, and each in-home device receives the character code group transferred from the image center via the control signal line, and converts it into character information. In claim 2), the character generating means for outputting character information and the character output means for displaying the character information outputted from the character generating means are provided independently of the image output system, and the in-home device is provided with a direct current Signal transmitting means is provided for transmitting a pulse-format calling signal and disconnection signal to the imaging center via a control signal line, and the imaging center receives the DC pulse-format calling signal and disconnection signal transmitted from the in-home device. (Claim 3).

[Industrial application field]

The present invention relates to improvements in a character generation display method and a call disconnection signal method in an image response system.

As part of the evolving image information service, an image response system that searches for desired image information from among the image information prepared at the image center and outputs and displays it on an in-home device is being developed.
For example, it is being used in fields such as medicine, real estate, and tourism.

[Conventional technology]

FIG. 11 is a diagram showing an example of a conventional image response system.

In FIG. 11, an image center 10 and a plurality of home devices 20 are connected by a video signal line 7 and a control signal line 8, respectively.

The image center IO is composed of a video file device 1, a still image file device 2, a line connection device 3, and a main control device 4. The still image file device 2 is composed of a large-capacity optical disk or the like that records a plurality of pieces of still image information p.

On the other hand, each home device 20 receives video information pm and still image information p (hereinafter collectively referred to as image information p) delivered from the image center 10 via the video signal line 7 as a video signal in the NTSC format, for example. , a receiver (TV) 5 that separates and displays image information corresponding to the three primary colors, and a call signal, a disconnection signal, and a designation signal that designates desired image information p to the image center 10 via a control signal line 8. Keypad (KP) that transmits S, etc.
)6.

For example, a home device 20 that wishes to search for still image information Pi
When a user performs a call operation using the keypad (KP) 6, the keypad (KP) 6 sends a call signal by forming a DC loop circuit to the image center IO via the control signal line 8. When the user specifies the desired still image information Ps by operating the number buttons provided on the keypad (KP) 6, the keypad (KP) 6 transmits the desired still image information Ps to the image center 10. The designation information S designating this is sent to the control signal line 8 in the form of a multi-frequency signal, for example.

In the image center 10, a subscriber circuit (sLC) 3 provided in the line connection device 3 corresponds to each in-home device 20.
7 is the corresponding pad (KP) via the control signal line 8
When a call from the home device 20 is detected by the DC current flowing through the DC loop circuit in the control signal receiving circuit (RV) 3
8, the control signal receiving circuit (RV) 38 subsequently receives the specified information S transmitted from the keypad (KP) 6 via the control signal line 8, and the control signal receiving circuit (RV) 38 receives the specified information S transmitted from the keypad (KP) 6 via the control signal line 8, The information is transmitted to the control device 4.

The main control device 4 controls the still image file device 2 from specifying information S.
For example, the still image information p5 for one frame specified by N
It is reproduced as a TSC format video signal, stored in an arbitrary empty frame memory (FM) 32 via an analog-to-digital conversion circuit (ADC) 31, and is also stored in a control circuit (
The switch circuit (VSW) 34 is controlled via the frame memory (FM
) 32 and a digital-to-analog conversion circuit (DAC) 35 corresponding to the video signal line 7 leading to the calling home device 20 are connected.

Thereafter, the still image information p accumulated in the frame memory (FM) 32 is extracted at predetermined intervals, and the character generation circuit (cG
) 33, a video signal line 7 via a switch circuit (VSW) 34 and a digital-to-analog conversion circuit (DAC) 35.
Then, it is sent out as an NTSC format video signal and transmitted to the home device 20.

The television receiver (TV) 5 separates the still image information P transmitted by the NTSC format video signal from the video signal line 7 into image information pH<PG and P□ corresponding to the three primary colors, and outputs an image (not shown). Display the output on the system.

Further, when the main controller 4 transmits the required character code group cc to the character generation circuit (cG) 33 via the control circuit (cTL) 36, the character generation circuit (cG) 33 converts the character code group cc into the character information and superimposes it on the still image information p5.

As a result, the still image information p on which the character information C is superimposed is displayed on the television receiver (TV) 5.

When the user who has finished searching for the still image information p performs a disconnection operation using the keypad (KP) 6, the keypad (KP)
) 6 transmits the disconnection signal to the image center 10 via the control signal line 8 by opening the DC loop circuit in the form to the image center IO.

In the image center IO, the subscriber circuit (sLC) 37 in the line connection device 3 stops flowing through the DC current flowing through the control signal line 8 to the DC loop circuit in the corresponding pad (KP) 6. When disconnection of the home device 20 is detected,
A disconnection signal is transmitted to the main controller 4 via the control circuit (cTL) 36, and the main controller 4 transmits the disconnection signal to the control circuit (cTL) 36.
Frame memory (FM) which was used for searching through
32, character generation circuit (cG) 33 and switch circuit (
(VSW) 34 is released.

Note that the frame memory (FM) 32 and character generation circuit (
The number of cG) 33 is installed in consideration of the number of users who simultaneously request a search for the still image information p when the in-home devices 20 are fully installed according to their capacity.

[Problem to be solved by the invention]

As is clear from the above description, in a conventional image response system, in order to display text information C superimposed on still image information p, an in-home device is A character generation circuit (cG) 33 was provided in consideration of the number of users when 20 was fully mounted to the capacity.

However, the in-home device 20 was not fully implemented from the beginning,
During this time, there was a risk that the character generation circuit (cG) 33 would not be effectively utilized.

In addition, since the character generation circuit (cG) 33 superimposed the character information C on the still image information p8 based on the digitalized NTSC format video signal, flickering or color blurring of the character information C occurred, making it difficult to use. This not only makes it difficult for people to see, but also makes it impossible to display small characters, resulting in a reduction in the amount of information that can be displayed on one screen.

Furthermore, when character information C is displayed superimposed on still image information ps, only the portion of character information C is displayed as still image information p.

will be lost, and the user will not have sufficient still image information ps.
There were also problems in which information was not communicated.

Furthermore, since the keypad (KP) 6 continues to form a DC loop circuit from the time the call is made until the call is disconnected, the keypad (KP) 6 is connected from the subscriber circuit (sLC) 37 via the control signal line 8 during that time. Since direct current is continuously supplied to the image center 10, there has also been a problem in that the current consumption of the image center 10 increases.

The present invention (claim 1) enables text information to be economically superimposed on image information regardless of the number of in-home devices installed, and also enables display of small text by preventing flickering of text information or color blurring. The purpose is to

Another object of the present invention (claim 2) is to enable text information to be displayed without damaging displayed image information.

Another object of the present invention (claim 3) is to reduce as much as possible the current consumption of the image center by the in-home device.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention (claims 1 and 3), and FIG. 2 is a diagram showing the principle of the present invention (claims 2 and 3).

In FIGS. 1 and 2, 10 is an image center, 20
is the home device, 7 is the video signal line, 8 is the control signal line, 101
is an image file, 2.01 and 203 are image output systems,
p is image information, S is specification information, C2 is character code group, CH
SCa and C3 are character information corresponding to the three primary colors, PR%
pG and Pg are image information corresponding to the three primary colors.

102 is a character code transmitting means provided in the image center 10 according to the present invention (claim 1).

103 is a character code transmitting means provided in the image center 10 according to the present invention (claim 2).

104 is a signal receiving means provided in the image center IO according to the present invention (claim 3).

Reference numeral 202 denotes a character generating means provided in the home device 20 according to the present invention (claim 1).

Reference numeral 204 denotes a character generating means provided in the home device 20 according to the present invention (claim 2).

205 is the in-home device 20 according to the present invention (claim 2),
This is a character output means provided independently of the image output system 203.

206 is a signal transmitting means provided in the home device 20 according to the present invention (claim 3).

[Effect]

Character code transmitting means 102 transfers a character code group Cc indicating character information to be output to home device 20 to home device 20 via control signal line 8 .

The character generating means 202 receives the character code group C0 transferred from the image center 10 via the control signal line 8, converts it into character information CI%CG%CI corresponding to each of the three primary colors, and then outputs the character code group C0 to the video signal line 7. The image output system 20 superimposes the image information p, I, pG, p, which is delivered and separated via
1. Manpower.

Therefore, according to the present invention (claim 1), the character generating means is installed together with the in-home device, and only the required number of character generating means are installed from the initial stage, so that the economical efficiency of the image response system is improved. Furthermore, since the text information is superimposed at the stage of separation into the three primary colors, there is no fear of flickering or blurring of the text information, improving image quality, increasing the amount of information that can be displayed, and improving the service of the image response system. Improves sex.

Character code transmitting means 103 transfers a character code group C0 indicating character information to be output to home device 20 to home device 20 via control signal line 8 .

The character generating means 204 receives the character code group C0 transferred from the image center 10 via the control signal line 8, converts it into character information C, and outputs it.

Character output means 205 displays character information C output from character generation means 204.

Therefore, according to the present invention (claim 2), since the text information is displayed independently of the image information transmitted from the image center, the image information is displayed without being obstructed by the text information, and the image response is The serviceability of the system is improved.

The signal transmitting means 206 sends a call signal and a disconnection signal in the form of DC pulses to the image center 10 via the control signal line 8.
Send to.

The signal receiving means 104 receives a call signal and a disconnection signal in the form of DC pulses transmitted from the home device 20 .

Therefore, according to the present invention (claim 3), direct current is not continuously supplied from the imaging center to each home device from the time the call is made to the time the call is disconnected, which is effective in reducing the power consumption of the imaging center. .

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a diagram showing an image response system according to an embodiment of the present invention (claims 1 and 3), and FIG.
It is a diagram showing an example of the character code transmission circuit in the figure,
5 is a diagram showing an example of the address timing in FIG. 4, FIG. 6 is a diagram showing an example of the character display mechanism in FIG. 3, and FIG. 7 is an example of the character code group in FIG. 3. FIG. 8 is a diagram showing an image response system according to an embodiment of the present invention (claims 2 and 3), and FIG. 9 is a diagram showing an example of the character display mechanism in FIG. 8. FIG. 10 is a diagram showing an example of the keypad in FIG. 8. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 3, the image file 101 in FIG.
as a video file device 1 and a still image file device 2
However, a character code transmitting circuit (c3) 39 is provided in the image center 10 as the character code transmitting means 102 in FIG. 1, and a television receiver (TV) 5 is provided as the image output system 201 in FIG. A character generation circuit (cG) 9 is provided in the home device 20 as character generation means 202 in the figure. In FIG. 3, the function corresponding to the signal receiving means 104 in FIG.
It is assumed that the keypad (KP) 6 is equipped with a function corresponding to the signal transmitting means 206.

In FIGS. 3 to 7, when the user of the home device 20 who wishes to search for still image information p3 performs a call operation using the keypad (KP) 6, the keypad (KP) 6 corresponds to the signal transmitting means 206. With the function of
Next, when the user operates the number buttons provided on the keypad (KP) 6 to specify desired still image information p3, the keypad (KP) 6 displays specification information S specifying the desired still image information p. is sent to the control signal line 8 in the form of a multi-frequency signal, for example.

In the image center 10, a subscriber circuit (sLC) 3 provided in the line connection device 3 corresponds to each in-home device 20.
The function corresponding to the signal receiving means 104 provided in the in-home device 20 is performed by supplying DC current to the corresponding pad (KP) 6 via the control signal line 8 for a predetermined period of time.
When a call is detected, the control signal receiving circuit (RV) 38 is activated, and the control signal receiving circuit (RV) 3B subsequently receives the designation information S transmitted from the keypad (KP) 6 via the control signal m8. It is received and transmitted to the main controller 4 via the control circuit (cTL) 36.

The main controller 4 receives designated information S from the still image file device 2.
The still image information p3 for the specified frame is converted to NTSC.
format video signal and input it to any free frame memory (
FM) 32 and the control circuit (cTL) 3
a frame memory (FM) 32 that controls a switch circuit (VSW) 34 via a frame memory (FM) 6 and stores still image information p;
A digital-to-analog conversion circuit (DAC) 35 corresponding to the video signal line 7 leading to the calling home device 20 is connected.

Thereafter, the still image information p accumulated in the frame memory (FM) 32 is extracted at predetermined intervals and sent to the switch circuit (VSW).
) 34 and digital-to-analog conversion circuit (DAC) 3
5 to the video signal line 7 as a video signal in the NTSC signal format, and transmitted to the home device 20.

The main controller 4 also sends character information C to be displayed on the television receiver (TV) 5 by superimposing it on the image information p in the home device 20.
Expressed by a character code group Cc as illustrated in FIG.
Identification information of the home device 20 to be displayed (address a)
and the character code transmission circuit (c3) 3 via the control circuit (cTL) 36 together with the transmission command o8 of the character code group cc.
9.

In FIG. 7, an example is shown in which characters [A] and (B) are displayed on the 0th line of the display screen of the home device 20, and first a start signal indicating the start of transmission of the character code group cc is shown. (00) □ in ASCII format, then (30) H as the 0th line, then (32) o, (33) as the character (A) = (2341) in JIS code.
)□, (34)□, (31)M and letter (B) = C
2342] as (32),, (33)Hl(34)H
2 (32), and finally (OD) A as a stop signal indicating the end of transmission of the character code group Cc.

The character code transmitting circuit (c3) 39 has a configuration as illustrated in FIG. According to the timing illustrated in FIG. 5, the address selector (
Empty data 1 (in ASCII format (7FIN)) manually inputted via the data selector (DS) 394 by the write address a transmitted via As) 393 is written in the write time region R of each time slot TS to TSn. It is written and read out in the follow-up area W and supplied to each subscriber circuit (sLC) 37.

From the control circuit (cTL) 36 to the timing generation circuit (TM)
) 395, the address selector (As) 393 and data selector (DS) 39
4 is switched by a switching signal transmitted from the timing generation circuit (TM) 395, and transmits the character code group C0 and address a transmitted from the control circuit (cTL) 36 to the time division memory (TDM) 391.

As a result, a character code group cc as shown in FIG. The control signal is sent to the control signal line 8 leading to the corresponding home device 20 via the The character generation circuit (c
G) transmitted to 9.

In addition, in FIG. 7, between the JIS code (234) indicating the letter (A) and [1], and between the JIS code indicating the letter CB)
Empty data 1=(7F)□ is inserted between rs code F (23), [4], and [2], but there is no problem because it is ignored on the receiving side.

In the character generating circuit (cG) 9, when the character code receiving circuit (cR) 91 receives the character code group C0 arriving from the control signal line 8, starting with the start signal (00)H and ending with the stop signal C0D))l. , processor (PU
) 92 analyzes the received character code group cc, ignores empty data i, and writes the character code to a predetermined address (what is it?, corresponds to the 0th line?) of the video memory (VM) 93. CA] = (2341) = ((32L, (33
), , (34)Hl(31)H) and the letter (B) =
(2342) = ((32)Hl(33))I, (
34)N, (32)H) are stored.

On the other hand, in the television receiver (TV) 5, the synchronization detection circuit (sY
N) 51 detects a synchronizing signal from the NTSC format still image information p6 transmitted from the image center 10 via the video signal line 7, and transmits it to the display control circuit (DC) 94, and then to the three primary color N circuits. (RGB) 52 is a synchronization detection circuit (sYN
) 51 is decomposed into image information Pa, Pa, and p corresponding to the three primary colors, and the selector 5 is normally set on the three primary color separation circuit (RGB) 52 side.
311.53. and picture tube (RT) via 5311
54 and display it.

The display control circuit (DC) 94 is a video memory (VM)
The character codes (A) and CB) stored in 93 are converted into character information ClIC0 and C3 corresponding to the three primary colors, and the selectors 5311, 53G and 53
11 as a switching signal.

Selector 53R153° and 53. corresponds to the character information C11S CG and C8 corresponding to the three primary colors, switches the image information P*, PG and p corresponding to the three primary colors to the character information CjlC1CGC and CIC that displays characters corresponding to the three primary colors, and receives the image. input to the tube (RT) 54.

As a result, still image information p5 with character information c (=characters [A] and [B]) superimposed at a predetermined position is displayed on the picture tube (RT) 54.

When the user who has finished searching for the still image information p performs a disconnection operation using the keypad (KP) 6, the keypad (KP)
) 6 has a function corresponding to the signal transmitting means 206 to form a DC loop circuit to the image center 10 via the control signal line 8 for a predetermined period of time to transmit a cut signal to the image center 10.

In the image center 10, the subscriber circuit (sLC) 37 corresponding to the disconnection home device 20 has a function corresponding to the signal receiving means 104, and sends a message to the corresponding pad (KP) 6 via the control signal line 8 for a predetermined period of time. In-house equipment by being supplied with direct current for a period of time! 20 is detected, a disconnection signal is transmitted to the main controller 4 via the control circuit (cTL) 36, and the main controller 4 transfers the frame memory ( FM) 32 and the connection paths in the switch circuit (VSW) 34 are released.

As is clear from the above explanation, according to the embodiment illustrated in FIGS. 3 to 7, since the character generation circuit (cG) 9 is provided for each home device 20, the number of effective However, as the in-home devices 20 are added, the character generation circuit (cG) 9 will also be added.

In addition, the text information C is converted into text information CRs Cc % CI corresponding to the three primary colors in the home device 20, and the image information p is converted into still image information p1 separated into image information p, pG, and p corresponding to the three primary colors. Because it is superimposed, character information C
This eliminates the risk of flickering and color blurring, and enables even small text information to be displayed clearly.
5, the amount of information that can be displayed on one screen increases.

Next, in FIG. 8, the video file device 1 and the still image file device 2 are used as the image file 101 in FIG. 2, and the character code transmitting means 10 in FIG.
3, a character code transmission circuit (c3) 39 is provided in the image center 10, and an image output system 203 in FIG.
The television receiver (TV) 5 is used as the character generating means 204 in FIG. 2, the character generating circuit (cG) 9 is used as the character generating means 204 in FIG. 20.

Furthermore, in FIG. 8, the signal receiving means 1 in FIG.
It is assumed that the function corresponding to 04 is provided in the subscriber circuit (sLC) 37, and the function corresponding to the signal transmitting means 206 is provided in the keypad (KP) 6.

In addition, in FIGS. 8 and 9, the character generation circuit (c
G) The display control circuit (DC) 94 in 9 is not connected to the television receiver (TV) 5 as in FIGS. 3 and 6, and is illustrated in FIG. 10 independently from the television receiver (TV) 5. The message display device (
MD) 61.

8 to 10, the user of the home device 20 who wishes to search for still image information p5 uses the keypad (KP) 6
to make a call, then operate the number buttons provided on the keypad (KP) 6 to select the desired still image information P.
When s is specified, desired still image information P8 is retrieved through the same process as described above, transmitted to the home device 20 via the video signal line 7, and displayed on the television receiver (TV) 5.

Further, the main control device 4 expresses the character information C to be displayed to the user in the home device 20 in parallel with the still image information p8 by a character code group cc as illustrated in FIG. 7, and makes it a display target. Identification information (address a) of the in-home device 20 and transmission command for the kiln code group C6 0. together with the control circuit (
Character code transmission circuit (c3) 39 via cTL) 36
Then, the character code group cC is sent to the control signal line 8 leading to the corresponding home device 20 via the character code transmission circuit (c5) 39 and the subscriber circuit (sLC) 37 through the same process as described above. It is transmitted via the control signal line 8 to the character generation circuit (cG) 9 provided in the corresponding home device 20.

In the character generating circuit (cG) 9, when the character code receiving circuit (cR) 91 receives the character code group cc arriving from the control signal line 8, the processor (PU
) 92 analyzes the received character code group cc and stores the character code (A) at a predetermined address in the video memory (VM) 93.
=(2341)=((32),,(33)Hl(34)
Hl(31)N) and character (B) = (2342) =
((32)M, (33)'□, (34)Hl(32)H
] is stored, it is converted into character information C to be displayed on the message display device (MD) 61, and the message display device (MD)
)61.

The message display device (MD) 61 has a display control circuit (DC
) 94 (=characters [A] and [B]) is displayed completely independently of the still image information Ps displayed by the television receiver (TV) 5.

As is clear from the above explanation, according to the embodiment illustrated in FIGS. 8 to 10, the character information C is the still image information p1.
is displayed on the message display device (MD) 61 that is installed independently of the television receiver (TV) 5 that displays the message.
There is no possibility that the still image information p displayed by ) 5 will be interfered with by the character information C.

Furthermore, in the embodiments shown in FIGS. 3 and 8,
Since the keypad (KP) 6 forms a DC loop circuit for the control signal line 8 only for a predetermined period of time when transmitting a call signal and a disconnection signal, the keypad (KP) 6 forms a DC loop circuit for the control signal line 8 only for a predetermined period of time, so that the keypad (KP) 6 does not transmit a call signal and a disconnection signal from the subscriber circuit (sLC) 37 for the predetermined period of time. DC current is supplied to the home devices 20 only during the period of time, and the amount of DC current consumed from the image center 10 to each home device 20 is compared to conventional image response systems that constantly supply direct current while searching for image information. and will be significantly reduced.

It should be noted that FIGS. 3 to 7 and FIGS. 8 to 10 are merely examples of the present invention (claims 1 to 3), and for example, a television receiver (TV) 5 or a message display device. (
The character information C displayed on the MD) 61 is sent to the image center 10.
The present invention is not limited to being transmitted via the control signal line 8, and may also be transmitted manually from the keypad (KP) 6, but the effects of the present invention remain the same even in such a case. Also keypad (KP) 6 and subscriber circuit (
The sLC) 37 is not necessarily limited to having functions corresponding to the signal transmitting means 206 and the signal receiving means 104. Furthermore, it goes without saying that the configuration of the image response system to which the present invention is applied is not limited to that shown in the drawings.

This increases the serviceability of the image response system.

Further, according to the present invention (claim 2), since the text information is displayed independently of the image information transmitted from the image center, the image information is displayed without being obstructed by the text information at all.
The serviceability of the image response system is improved.

Further, according to the present invention (claim 3), direct current is not continuously supplied from the imaging center to each home device from the time the call is made until the call is disconnected, which is effective in reducing power consumption of the imaging center. .

[Effects of the Invention] As described above, according to the present invention (Claim 1), the character generation means is installed together with the in-home device, and only the necessary number of character generation means is installed from the initial stage, so that the image response system is economical. Furthermore, since the text information is superimposed upon separation into the three primary colors, there is no risk of flickering or blurring of the text information, improving image quality and reducing the amount of information that can be displayed.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the principle of the present invention (claims 1 and 3), Fig. 2 is a diagram showing the principle of the present invention (claims 2 and 3), and Fig. 3 is a diagram showing the principle of the present invention (claims 1 and 3). Claim 1 and Claim 3
), FIG. 4 is a diagram showing an example of the character code transmission circuit in FIG. 3,
5 is a diagram showing an example of the address timing in FIG. 4, FIG. 6 is a diagram showing an example of the character display mechanism in FIG. 3, FIG. 7 is a diagram showing an example of the character code group in FIG. 3, FIG. 8 is a diagram showing an image response system according to an embodiment of the present invention (claims 2 and 3), and FIG.
FIG. 1O is a diagram showing an example of the keypad in FIG. 8, and FIG. 11 is a diagram showing an example of a conventional image response system. In the figure, l is a video file device, 2 is a still image file device, 3 is a line connection device, 4 is a main controller, 5 is a television receiver (TV), 6 is a keypad (KP), 7 is a video signal line, 8 is a control signal line, 9 and 33 are character generation circuits (cG
), 10 is an image center, 20 is an in-home device, 31 is an analog-to-digital conversion circuit (ADC), 32 is a frame memory (FM), 34 is a switch circuit (VSW), 35
3 is a digital-to-analog conversion circuit (CDAC), 36 is a control circuit (cTL), 37 is a subscriber circuit (sLC), 3
8 is a control signal receiving circuit (RV), 39 is a character code transmitting circuit (c3), 51 is a synchronization detection circuit (sYN), 52 is a three primary color separation circuit (RGB), 535.53. ,．． 53
! 1 is a selector, 54 is a picture tube CRT), 61 is a message display (MD), 91 is a character code receiving circuit (cR
), 92 is a processor (PU), 93 is a video memo I
J (VM), 94 is a display control circuit (DC), 95 is a memory (M), 101 is an image file, 102 and 103
is a character code transmitting means, 104 is a signal receiving means, 201
203 is an image output system, 202 and 204 are character generation means, 205 is a character output means, 206 is a signal transmission means, 391 is a time division memory (TDM), 392 is an address counter (AC), and 393 is an address selector (A
s), 394 is the data selector (DS), 395 is the timing occurrence 20 This issue B month (claim) sign 1 and the false image of the three claims 2υ Honsho Hu (Claim 2 and closing claim 3) 'Slip' JID 3rd
Character code sending word circuit in the figure Figure 4 Address timing for Hl on the fourth page Figure 3 Character display in Figure 2

Claims (3)

[Claims] (1) The image center (10) and a plurality of home devices (20) are connected through a video signal line (7) and a control signal line (8), respectively, and each home device (20) is connected to the control signal line (8). ) Based on the designation information (s) transmitted to the image center (10) via
) is searched and delivered to the home device (20) via the video signal line (7), and image information (p_
R, p_G, p_B) and image output system (201)
In the image response system, a character code group (c_c) indicating character information to be output to the home device (20) is sent to the image center (10) via the control signal line (8). A character code transmitting means (102) is provided for transmitting a character code to an in-home device (20), and the character code transmitted from the image center (10) to each of the in-home devices (20) via the control signal line (8) is provided. After receiving the code group (c_c) and converting it into character information (c_R, c_G, c_B) corresponding to the three primary colors,
Image information corresponding to the three primary colors (p_R, p_G, p_B
) is provided with a character generation means (202) superimposed on the image output system (201) and input to an image output system (201). (2) The image center (10) and a plurality of home devices (20) are connected through a video signal line (7) and a control signal line (8), respectively, and each home device (20) is connected to the control signal line (8). ) Based on the designation information (s) transmitted to both image centers (10) via
) is searched for, delivered to the in-home device (20) via the video signal line (7), and displayed on the image output system (203). A character code transmitting means (103) is provided for transmitting a character code group (c_c) indicating character information to be output to the device (20) to the indoor device (20) via the control signal line (8), Each of the home devices (20) receives the character code group (c_c) transferred from the image center (10) via the control signal line (8), converts it into character information (c), and converts it into character information (c). Character generating means (204) to output, and character information (204) output from the character generating means (204).
A character generation/display method characterized in that a character output means (205) for displaying c) is provided independently of the image output system (203). (3) The image center (10) and a plurality of home devices (20) are connected through a video signal line (7) and a control signal line (8), respectively, and each home device (20) is connected to the control signal line (8). ) Based on the designation information (s) transmitted to the image center (10) via
), and transmits the call signal and disconnection signal in the form of DC pulses to the home device (20) via the video signal line (7). A signal transmitting means (206) is provided to transmit a signal to the image center (10) via a control signal line (8), and the signal transmitter (206) transmits a signal in the form of a DC pulse transmitted from the in-home device (20) to the image center (10). A call disconnection signaling system characterized by comprising signal receiving means (104) for receiving a call signal and a disconnection signal.